33-115 Stanley Powerlock Pocket Rule 1/4″ wide blade

1/4″ wide blade
Back of blade provides scale that measures up to 3′ diameters
Heat-treated spring stands up to regular use
Polymer-coated blade withstands abrasion for long life
Slim, case fits perfectly in a pocket
Special Tru-Zero hook does double-duty as a pivot for drawing circles and arcs